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Visual Experience Shapes Orthographic Representations in the Visual Word Form Area
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Accessing orthographic representations from speech: The role of left ventral occipitotemporal cortex in spelling
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A dual-route perspective on eye movements of dyslexic readers
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A dual-route perspective on poor reading in a regular orthography: An fMRI study
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A Dual-Route Perspective on Brain Activation in Response to Visual Words: Evidence for a Length by Lexicality Interaction in the Visual Word Form Area (VWFA)
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On the functional neuroanatomy of visual word processing: Effects of case and letter deviance
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A dual-route perspective on poor reading in a regular orthography: Evidence from phonological and orthographic lexical decisions
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Taxi vs. Taksi: On orthographic word recognition in the left ventral occipitotemporal cortex
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Abstract:
The importance of the left occipitotemporal cortex for visual word processing is highlighted by numerous functional neuroimaging studies, but the precise function of the Visual Word Form Area (VWFA) in this brain region is still under debate. The present fMRI study varied orthographic familiarity independent from phonological-semantic familiarity by presenting orthographically familiar and orthographically unfamiliar forms (pseudohomophones) of the same words in a phonological lexical decision task. Consistent with orthographic word recognition in the VWFA, we found lower activation for familiar compared to unfamiliar forms, but no difference between pseudohomophones and pseudowords. This orthographic familiarity effect in the VWFA differed from the phonological familiarity effect in left frontal regions, where phonologically unfamiliar pseudowords led to higher activation than phonologically familiar pseudohomophones. We suggest that the VWFA not only computes letter string representations but also hosts word specific orthographic representations. These representations function as recognition units with the effect that letter strings, which readily match with stored representations lead to less activation than letter strings which do not.
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Article
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URL: http://www.ncbi.nlm.nih.gov/pubmed/17933023 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2989180
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